Ricoh 100-300mm F4 Lens Patent

By Vashistha, on May 18th, 2016

We have a spotted another fullframe lens patent by Ricoh for upcoming Pentax fullfrme camera including the Pentax K1 DSLR. According to latest patent document Pentax filed a 100 to 300 mm lens patent that features a constant of F4 aperture throughout the zoom range. automatic translation of the patent document is below

Description, self-interpretation of the patent literature

Patent Publication No. 2016-80717

Published 2016.5.16

Filing date 2014.10.9

Example 1

Zoom ratio (zoom ratio) 2.87

FNO. 4.1 4.1 4.1

f 102.00 200.01 293.01

W 12.0 6.1 4.1

Y 21.64 21.64 21.64

fB 38.16 38.16 38.16

L 279.45 279.44 279.44

This is not the first time we have a spotted a lens for Pentax K1 DSLR early we have also published patents related to Pentax full frame camera for example you can see on April 13th 2015 we have published 200 mm f 2.8 lens patent for a full frame camera The other patent was published on November 18th 2013 for 60mm F2.8 Macro lens for full frame camera.

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